WO2020184147A1 - Dispositif de génération de vibrations - Google Patents

Dispositif de génération de vibrations Download PDF

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Publication number
WO2020184147A1
WO2020184147A1 PCT/JP2020/007014 JP2020007014W WO2020184147A1 WO 2020184147 A1 WO2020184147 A1 WO 2020184147A1 JP 2020007014 W JP2020007014 W JP 2020007014W WO 2020184147 A1 WO2020184147 A1 WO 2020184147A1
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WO
WIPO (PCT)
Prior art keywords
housing
frequency
vibration
region
exciting coil
Prior art date
Application number
PCT/JP2020/007014
Other languages
English (en)
Japanese (ja)
Inventor
佐藤　邦生
宏 涌田
忠満 佐藤
Original Assignee
アルプスアルパイン株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アルプスアルパイン株式会社 filed Critical アルプスアルパイン株式会社
Priority to JP2021504889A priority Critical patent/JP7253613B2/ja
Priority to CN202080012365.XA priority patent/CN113382808B/zh
Priority to EP20770919.7A priority patent/EP3939709A4/fr
Publication of WO2020184147A1 publication Critical patent/WO2020184147A1/fr
Priority to US17/446,351 priority patent/US20210387231A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/04—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism
    • B06B1/045—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with electromagnetism using vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • This disclosure relates to a vibration generator.
  • Patent Document 1 discloses a vibration source driving device for the purpose of exclusively generating sound and vibration.
  • An object of the present disclosure is to provide a vibration generator capable of presenting sound and vibration sufficiently separated.
  • a housing a vibrating plate that is supported by the housing and generates sound by vibrating in the first direction, and a vibration applying portion that is attached to the housing and vibrates the housing.
  • the vibration imparting unit vibrates the housing in the first direction at a first frequency, and causes the housing to vibrate in a second direction at a second frequency lower than the first frequency.
  • a vibration generator is provided that vibrates in.
  • FIG. 10 is a plan view of FIG. 10 excluding the movable yoke and the permanent magnet.
  • FIGS. 1A, 1B and 1C are diagrams showing the configuration of the vibration generator 200 according to the first embodiment.
  • 1A is an exploded perspective view
  • FIG. 1B is a plan view
  • FIG. 1C is a cross-sectional view taken along the line I-I in FIG. 1B.
  • X1 is left
  • X2 is right
  • Y1 is front
  • Y2 is rear
  • Z1 is up
  • Z2 is down.
  • the vibration generator 200 includes a lower case 210, a vibration applying portion 220, an upper case 230, and a diaphragm 240.
  • the lower case 210 and the upper case 230 are included in the housing 260.
  • the lower case 210 has a disc-shaped bottom plate 211 and a cylindrical side plate 212 extending upward from the edge of the bottom plate 211.
  • the vibration applying portion 220 is fixed to the upper surface of the bottom plate 211 by the double-sided tape 251.
  • the upper case 230 has an annular bottom plate 231 having an opening 232 formed in the center, and a guide portion 233 provided on the edge of the bottom plate 231 to guide the diaphragm 240.
  • the diaphragm 240 has a disk shape, is fixed to the upper surface of the bottom plate 231 by an annular double-sided tape 252 inside the guide portion 233, and is held by the upper case 230.
  • the upper case 230 is fixed to the lower case 210 so that the diaphragm 240 is located above the upper case 230.
  • the upper case 230 may be fixed to the lower case 210 so that the diaphragm 240 is located below the upper case 230.
  • the upper case 230 is an example of a holding portion.
  • the diaphragm 240 is supported by the housing 260, and generates sound by vibrating in the first direction (Z1-Z2 direction).
  • the vibration applying portion 220 is attached to the housing 260 and vibrates the housing 260.
  • the vibration imparting unit 220 vibrates the housing 260 in the first direction at the first frequency f1, and vibrates the housing 260 in the second direction at a second frequency f2 lower than the first frequency f1.
  • the second direction is a direction different from the first direction, and is preferably a direction (X1-X2 direction or Y1-Y2 direction) orthogonal to the first direction (Z1-Z2 direction).
  • the diaphragm 240 can be integrally formed with the housing 260.
  • the diaphragm 240 can be integrally formed with the upper case 230.
  • the housing 260 and the diaphragm 240 are made of synthetic resin or metal.
  • the diaphragm 240 vibrates in the first direction due to the vibration of the housing 260 in the first direction, and the diaphragm 240 vibrates the surrounding air to generate sound.
  • the first frequency f1 is not particularly limited, and can be, for example, 200 Hz or more and 6 kHz or less, and particularly preferably a range that is easily detected by humans, for example, 1 kHz or more and 4 kHz or less. Even if the housing 260 vibrates at a frequency within a range that is easily detected by humans, it is difficult for humans to detect it by touch. Therefore, the vibration at the first frequency f1 in the first direction makes it possible to present the sound to the human without substantially feeling the vibration.
  • the second frequency f2 is not particularly limited and can be, for example, 600 Hz or less, and particularly preferably a range that is easily detected by humans, for example, 100 Hz or more and 500 Hz or less. Even when the first frequency f1 is 200 Hz or more and 600 Hz or less, the second frequency f2 may be lower than the first frequency f1. Human hearing may be able to detect sound with a frequency that is easy to detect by touch, but in the vibration in the second direction, the diaphragm 240 hardly vibrates in the first direction, so that the diaphragm 240 does not generate sound. .. Therefore, the vibration at the second frequency f2 in the second direction can present the vibration to the human without substantially feeling the sound.
  • FIG. 2A and 2B are first explanatory views showing the configuration of the vibration applying portion 1.
  • FIG. 2A is a perspective view showing the appearance of the vibration applying portion 1
  • FIG. 2B is a perspective view showing a state in which the lid portion 12 is removed from the vibration applying portion 1.
  • FIG. 3 is a second explanatory view showing the configuration of the vibration applying unit 1, which is an exploded perspective view of the vibration applying unit 1.
  • FIG. 4 is an explanatory view showing the configuration of the vibrating body 20 in the vibration applying portion 1, and is a perspective view of the vibrating body 20.
  • FIG. 5A and 5B are first explanatory views showing the configuration of the holding portion 30 and the elastic support portion 40 in the vibration applying portion 1.
  • FIG. 5A is a perspective view of the holding portion 30 and the elastic supporting portion 40
  • FIG. 5B is a front view of the holding portion 30 and the elastic supporting portion 40 in the vibration applying portion 1.
  • 6A and 6B are second explanatory views showing the configuration of the holding portion 30 and the elastic support portion 40 in the vibration applying portion 1.
  • FIG. 6A is a side view of the holding portion 30 and the elastic support portion 40 when viewed from the right
  • FIG. 6B is a cross-sectional view corresponding to the A1-A1 cross section of FIG. 5B.
  • 7A and 7B are explanatory views showing the configuration of the permanent magnet in the vibration applying portion 1.
  • FIG. 7A is an exploded perspective view of the rear permanent magnet 70
  • FIG. 7B is a front view of the rear permanent magnet 70.
  • FIGS. 8A and 8B are explanatory views showing the driving direction of the magnetic driving unit 50 in the vibration applying unit 1, and are explanatory views when the magnetic core 61 is viewed from the front.
  • FIG. 8A shows the direction of the magnetic force exerted on the front end portion 61F of the magnetic core 61 by the permanent magnet 70 on the front side when the front end portion 61F of the magnetic core 61 is magnetized to the N pole
  • FIG. 8B shows the direction of the magnetic force exerted on the front end portion 61F of the magnetic core 61.
  • the solid arrow indicates the direction of the magnetic force exerted on the magnetic core 61.
  • FIGS. 9A and 9B are explanatory views showing the vibration direction of the vibrating body 20 in the vibration applying portion 1, and are explanatory views when the vibrating body 20, the holding portion 30, and the elastic support portion 40 are viewed from the front.
  • FIG. 9A shows the vibration direction of the vibrating body 20 when the electric magnet 60 generates an alternating magnetic field having the same frequency as the first natural frequency
  • FIG. 9B shows the vibration direction of the vibrating body 20 when the electric magnet 60 has the same frequency as the second natural frequency.
  • the vibration direction of the vibrating body 20 when an alternating magnetic field of frequency is generated is shown.
  • the solid arrow indicates the direction in which the vibrating body 20 is likely to vibrate, that is, the vibrating direction of the vibrating body 20, and the dotted arrow indicates the direction in which the vibrating body 20 is less likely to vibrate.
  • the Z1-Z2 direction is an example of the first direction
  • the X1-X2 direction is an example of the second direction
  • the Y1-Y2 direction is the third direction. This is an example.
  • the vibration applying portion 1 includes a housing 10, a vibrating body 20, a holding portion 30, two elastic support portions 40, and a magnetic driving portion 50. There is.
  • the housing 10 is configured by combining the main body portion 11 and the lid portion 12.
  • the main body 11 is a box-shaped member of a substantially rectangular parallelepiped formed by processing a metal plate, and has a housing portion 11a which is a concave portion of the substantially rectangular parallelepiped which is concave downward from the upper end 11b of the main body 11. .
  • the lid portion 12 is a substantially rectangular plate-shaped member formed by processing a metal plate, and is attached to the upper end portion 11b of the main body portion 11 to cover the accommodating portion 11a from above.
  • the housing 10 is an example of an inner housing.
  • the vibrating body 20 is a substantially rectangular parallelepiped member housed in the housing portion 11a of the housing 10.
  • the vibrating body 20 is provided with an electromagnet 60 that is a part of the magnetic driving unit 50.
  • the holding portion 30 and the elastic supporting portion 40 are integrally formed by processing a metal plate having a spring property into a predetermined shape.
  • the holding portion 30 is a box-shaped portion of a substantially rectangular parallelepiped, as shown in FIGS. 5A, 5B, 6A and 6B. As shown in FIGS. 2B and 3, the holding portion 30 accommodates and holds the lower portion of the vibrating body 20.
  • the elastic support portion 40 is a leaf spring formed by bending a metal plate extending in the left-right direction a plurality of times so that creases are along the front-rear direction.
  • One of the two elastic support portions 40 extends to the left from the left end portion 30L of the holding portion 30, and the other extends to the right from the right end portion 30R of the holding portion 30.
  • the elastic support portion 40 extending to the left from the left end portion 30L of the holding portion 30 is abbreviated as the left elastic support portion 40
  • the elastic support portion 40 extending to the right from the right end portion 30R of the holding portion 30 is abbreviated. It is abbreviated as the elastic support portion 40 on the right side.
  • the elastic support portion 40 has three bent portions 41, two flat portions 42, and a mounting portion 43, as shown in FIGS. 5A, 5B, 6A and 6B.
  • the bent portion 41 is a portion that is bent along the crease.
  • the flat portion 42 is a substantially rectangular portion extending from one of the three bent portions 41 toward the other, and has a side along the direction of the fold and a side along the extending direction. have.
  • the elastic support portion 40 has a dimension along the crease direction of the flat portion 42 (hereinafter, abbreviated as the width dimension of the flat portion 42) and a dimension along the extension direction of the flat portion 42 (hereinafter, flat portion 42). It is formed so as to be larger than the length dimension (abbreviation). Further, a substantially rectangular opening 42a is formed at a position avoiding the outer peripheral portion of the flat portion 42.
  • a leaf spring having a bent structure such as the elastic support portion 40 has a feature that it is easily elastically deformed in the direction orthogonal to the crease (horizontal direction and vertical direction). That is, such a leaf spring can be elastically deformed along the left-right direction by expansion and contraction, and can be elastically deformed along the vertical direction by bending.
  • such a leaf spring also has a feature that it is difficult to be deformed in the direction along the crease (front-rear direction), and is therefore suitable as a member for suppressing movement along the front-rear direction.
  • the mounting portion 43 is formed at the tip of the elastic support portion 40.
  • An engaging claw portion 43a is formed at a predetermined position of the mounting portion 43. Then, the elastic support portion 40 is attached to the housing 10 by engaging the engaging claw portion 43a with the main body portion 11 of the housing 10. Then, the elastic support portion 40 elastically deforms along the horizontal direction and the vertical direction to support the vibrating body 20 so as to be vibrable along the horizontal direction and the vertical direction.
  • the vibrating body 20 is supported by the elastic support portion 40 and vibrates along the left-right direction at the first natural frequency determined in response to the first elastic coefficient and the mass of the vibrating body 20, and the second vibrating body 20 It vibrates in the vertical direction at a second natural frequency determined according to the elasticity coefficient and the mass of the vibrating body 20. Since the first elastic modulus and the second elastic modulus are different values, the first natural frequency and the second natural frequency are also different values.
  • the magnetic drive unit 50 includes an electromagnet 60 (first magnetic field generating unit) arranged on the vibrating body 20 side and two permanent magnets 70 (third) arranged on the housing 10 side. It is configured to have (2) magnetic field generators).
  • the electromagnet 60 has a magnetic core 61, a bobbin 62, a coil 63, and a terminal 64.
  • the magnetic core 61 is a prismatic member made of a ferromagnet and extends in the front-rear direction.
  • the bobbin 62 is a tubular member made of an insulator and covers the outer peripheral portion of the magnetic core 61.
  • the coil 63 is formed by winding wiring around the outer peripheral portion of the bobbin 62.
  • the terminal 64 connects both ends of the coil 63 and an external circuit (not shown) via a wiring member (not shown).
  • the electromagnet 60 generates a magnetic field along the front-rear direction by passing an alternating current through the coil 63, and magnetizes the front end portion 61F and the rear end portion 61R of the magnetic core 61 into different magnetic poles. Then, by making the current flowing through the coil 63 an alternating current, the magnetic field generated by the electromagnet 60 becomes an alternating magnetic field in which the direction of the magnetic field changes in response to the change in the direction of the current.
  • the front end portion 61F of the magnetic core 61 is the S pole
  • the rear end portion 61R is the N pole
  • the front end portion 61F of the magnetic core 61 is the N pole
  • the rear end portion 61R is the S pole.
  • the timing at which the electromagnet 60 generates the alternating magnetic field and the frequency of the alternating magnetic field are controlled by the above-mentioned external circuit.
  • the permanent magnet 70 is a substantially rectangular parallelepiped plate-shaped magnet.
  • the two permanent magnets 70 are located at the front end portion of the housing 10 so as to be located on the extension line of the magnetic core 61 of the electromagnet 60 of the vibrating body 20 in the front-rear direction (hereinafter, abbreviated as the extension line of the vibrating body 20 in the front-rear direction). It is arranged on the side and the rear end side, respectively.
  • the permanent magnet 70 is formed with a substantially rectangular magnetized surface 71 having sides along the left-right direction and the up-down direction. The magnetization surface 71 of the permanent magnet 70 and the magnetic core 61 of the electromagnet 60 face each other in the front-rear direction.
  • the permanent magnet 70 is formed with a slit 72 extending diagonally from the upper left to the lower right of the magnetization surface 71.
  • the magnetization surface 71 is divided into two magnetization regions 73 by the slit 72, and the two magnetization regions 73 are magnetized so as to have different magnetic poles from each other. In this way, the permanent magnet 70 is magnetized so that different magnetic poles are lined up along the horizontal direction and the vertical direction.
  • the permanent magnet 70 arranged on the front end side of the housing 10 is abbreviated as the front permanent magnet 70
  • the permanent magnet 70 arranged on the rear end side of the housing 10 is permanently referred to on the rear side. It is abbreviated as magnet 70.
  • the lower left region is designated as the first magnetization region 73a
  • the upper right region is designated as the second magnetization region 73b.
  • the permanent magnet 70 is attached with a yoke 74, which is a member made of a ferromagnet, for directing the magnetic field generated by the permanent magnet 70 toward the electromagnet 60.
  • the vibration applying unit 1 has such a configuration.
  • the magnetic drive unit 50 has an electromagnet 60 arranged on the vibrating body 20 side and two permanent magnets 70 arranged on the housing 10 side. Then, the electromagnet 60 generates an alternating magnetic field by passing an alternating current through the coil 63, and magnetizes the front end portion 61F and the rear end portion 61R of the magnetic core 61. Further, the permanent magnet 70 is arranged on the housing 10 side so as to face the electromagnet 60 in the front-rear direction. A first magnetization region 73a and a second magnetization region 73b magnetized so as to have different magnetic poles are formed on the magnetization surface 71 of the permanent magnet 70.
  • the front end portion 61F of the magnetic core 61 repels the first magnetization region 73a of the front permanent magnet 70, and the second It attracts each other with the magnetized region 73b.
  • the rear end 61R of the magnetic core 61 is magnetized to the N pole, and the rear end 61R of the magnetic core 61 is the second permanent magnet 70 on the rear side. It repels each other with the first magnetization region 73a and attracts each other with the second magnetization region 73b.
  • magnetic force acts on the vibrating body 20 in the rightward direction and the upward direction.
  • the magnetic drive unit 50 each time the direction of the magnetic field generated by the electromagnet 60 is reversed, the front end portion 61F and the rear end portion 61R of the magnetic core 61 of the electromagnet 60 become the first magnetization region 73a of the permanent magnet 70. They attract and repel each other, and repel each other and attract each other with the second magnetization region 73b. Then, the magnetic drive unit 50 drives the vibrating body 20 in the left-right direction and the up-down direction by utilizing the magnetic force between the electromagnet 60 and the permanent magnet 70.
  • the vibrating body 20 is supported by the elastic support portion 40 so as to be vibrable in the horizontal direction and the vertical direction. Then, the vibrating body 20 vibrates along the left-right direction at the first natural frequency determined corresponding to the first elastic coefficient and the mass of the vibrating body 20, and becomes the second elastic coefficient and the mass of the vibrating body 20. It vibrates along the vertical direction at the second natural frequency determined correspondingly.
  • FIG. 9A when the electric magnet 60 generates an alternating magnetic field having the same frequency as the first natural frequency, the vibrating body 20 easily vibrates in the left-right direction and in the up-down direction. Is less likely to vibrate. As a result, the vibrating body 20 vibrates in the left-right direction.
  • FIG. 9B when the electric magnet 60 generates an alternating magnetic field having the same frequency as the second natural frequency, the vibrating body 20 easily vibrates in the vertical direction and with respect to the horizontal direction. Is less likely to vibrate. As a result, the vibrating body 20 vibrates in the vertical direction.
  • the magnetic drive unit 50 utilizes the relationship between the frequency of the alternating magnetic field and the easiness of vibration of the vibrating body 20 to move the vibrating body 20 along the left-right direction by an alternating magnetic field having the same frequency as the first natural frequency.
  • the vibrating body 20 is vibrated in the vertical direction by an alternating magnetic field having the same frequency as the second natural frequency.
  • vibrating the vibrating body 20 along the left-right direction by an alternating magnetic field having the same frequency as the first natural frequency is abbreviated as driving the vibrating body 20 in the left-right direction at the first natural frequency.
  • Vibrating the vibrating body 20 along the vertical direction by an alternating magnetic field having the same frequency as the natural frequency of the above is abbreviated as driving the vibrating body 20 in the vertical direction with the second natural frequency.
  • a leaf spring having a bent structure such as the elastic support portion 40 is characterized in that it is easily elastically deformed in the direction orthogonal to the crease, but is not easily deformed in the direction along the crease. Therefore, the vibration applying portion 1 suppresses the deformation of the elastic support portion 40 along the front-rear direction by utilizing the characteristics of the leaf spring having such a bent structure. As a result, the vibrating body 20 suppresses the movement along the front-rear direction, and stabilizes the vibrating operation of the vibrating body 20 along the left-right direction and the up-down direction.
  • the elastic support portion 40 is formed so that the width dimension of the flat portion 42 is larger than the length dimension of the flat portion 42 by utilizing the characteristics of the leaf spring having such a bent structure. As a result, it is easy to suppress the deformation of the elastic support portion 40 along the front-rear direction.
  • the outer peripheral portion of the flat portion 42 greatly affects the difficulty of deformation in the direction along the crease of the elastic support portion 40, but the outer peripheral portion of the flat portion 42 is avoided.
  • the influence of the portion is smaller than the influence of the outer peripheral portion of the flat portion 42.
  • the opening 42a in a portion of the flat portion 42 avoiding the outer peripheral portion, the mechanical strength in the direction orthogonal to the crease of the flat portion 42 (horizontal direction and vertical direction) is reduced, and the elastic support portion 40 is formed. It can be easily elastically deformed in the direction orthogonal to the crease.
  • an opening 42a is formed at a position avoiding the outer peripheral portion of the flat portion 42 by utilizing the characteristics of the leaf spring having such a bent structure, thereby elastically supporting the portion 42. While suppressing the portion 40 from being easily deformed in the front-rear direction, it is easily elastically deformed in the left-right direction and the up-down direction. By adjusting the dimensions of the opening 42a, the ease of elastic deformation of the elastic support portion 40 along the left-right direction and the up-down direction can be adjusted.
  • the elastic support portion 40 of the elastic support portion 40 has a crease along the front-rear direction (third direction) orthogonal to the left-right direction (first direction) and the vertical direction (second direction). It is a leaf spring in which a plurality of bent portions 41 bent in a direction and two substantially rectangular flat portions 42 extending from one of the plurality of bent portions 41 toward the other are formed.
  • a leaf spring having such a bent structure is characterized in that it is easily elastically deformed in the direction orthogonal to the crease, but is not easily deformed in the direction along the crease.
  • the elastic support portion 40 can be easily elastically deformed along the left-right direction and the vertical direction, and the deformation of the elastic support portion 40 along the front-rear direction can be suppressed.
  • the vibrating body 20 Even if a force along the front-rear direction is applied to the vibrating body 20 by the magnetic force between the electromagnet 60 (first magnetic field generating part) and the permanent magnet 70 (second magnetic field generating part), the vibrating body 20 The movement along the front-rear direction can be suppressed, and the vibration operation along the left-right direction and the up-down direction of the vibrating body 20 can be stabilized.
  • the opening 42a is formed at a position avoiding the outer peripheral portion of the flat portion 42, thereby suppressing the elastic support portion 40 from being easily deformed along the front-rear direction, and in the left-right direction. And it can be easily elastically deformed along the vertical direction. Then, by adjusting the size of the opening 42a, it is possible to adjust the ease of elastic deformation of the elastic support portion 40 along the horizontal direction and the vertical direction. As a result, it becomes possible to make the vibrating body 20 easily vibrate in the horizontal direction and the vertical direction while stabilizing the vibrating operation of the vibrating body 20, and to adjust the vibrating ease of the vibrating body 20. ..
  • the elastic support is provided so that the width dimension of the flat portion 42 (dimension in the direction along the crease) is larger than the length dimension (dimension along the extension direction) of the flat portion 42.
  • the magnetic driving unit 50 drives the vibrating body 20 in the left-right direction by driving the vibrating body 20 with a first natural frequency corresponding to the first elastic coefficient and the mass of the vibrating body 20. It is possible to make it easy to vibrate along the vertical direction and to make it difficult to vibrate along the vertical direction. Further, the magnetic drive unit 50 easily vibrates the vibrating body 20 in the vertical direction by driving the vibrating body 20 with a second natural frequency corresponding to the second elastic modulus and the mass of the vibrating body 20. However, it can be made difficult to vibrate along the left-right direction. As a result, it is possible to realize a desired vibration operation along the left-right direction and the vertical direction of the vibration body 20 while stabilizing the vibration operation of the vibration body 20.
  • the alternating magnetic field generated by the electromagnet 60 causes the magnetic core 61 on the electromagnet 60 side to attract or repel each other with the first magnetization region 73a, which is one magnetic pole on the permanent magnet 70 side.
  • the second magnetization region 73b which is the other magnetic pole on the permanent magnet 70 side.
  • such a vibration applying unit 1 is suitable for driving the vibrating body 20 by utilizing the magnetic force between the electromagnet 60 and the permanent magnet 70.
  • Such a vibration imparting portion 1 can be used, for example, by attaching the lower end portion or the lid portion 12 of the main body portion 11 to the bottom plate 211 of the housing 260.
  • the configuration of the vibration applying unit 1 may be changed as appropriate.
  • the two elastic support portions 40 may be directly attached to the vibrating body 20. In that case, the holding unit 30 becomes unnecessary.
  • the vibration applying unit 1 may further include members other than those described above.
  • the materials and shapes of the housing 10, the holding portion 30, and the elastic support portion 40 may be appropriately changed as long as the predetermined functions can be realized.
  • the number of times the leaf spring of the elastic support portion 40 is bent may be a number other than those described above.
  • the shape of the flat portion 42 and the shape of the opening 42a may be shapes other than those described above.
  • the elastic support portion 40 may be formed by using a member different from the holding portion 30, and then combined with the holding portion 30.
  • the configuration of the magnetic drive unit 50 may be appropriately changed as long as a predetermined function can be realized.
  • the permanent magnet 70 may be arranged on either the front end side or the rear end side of the housing 10.
  • the shape of the slit 72 may be a shape other than the above-described shape as long as different magnetic poles are lined up along the horizontal direction and the vertical direction.
  • a plurality of permanent magnets magnetized so as to have different magnetic poles may be arranged side by side in the housing 10 along the horizontal direction and the vertical direction.
  • the magnetic drive unit 50 may drive the vibrating body 20 at a frequency other than the first natural frequency and the second natural frequency as long as a predetermined function can be realized.
  • the magnetic drive unit 50 not only drives the vibrating body 20 along the left-right direction at the first natural frequency and drives the vibrating body 20 along the vertical direction at the second natural frequency, but also at the second natural frequency.
  • the vibrating body 20 may be driven along an oblique direction at a frequency intermediate between the natural frequency of 1 and the natural frequency of the second.
  • FIG. 10 is a plan view showing the configuration of the vibration applying portion 2
  • FIG. 11 is a plan view of FIG. 10 excluding the movable yoke and the permanent magnet
  • FIG. 12 is a cross section showing the configuration of the vibration applying portion 2. It is a figure.
  • FIG. 6 corresponds to a cross-sectional view taken along the line I-I in FIGS. 4 and 5.
  • the Z1-Z2 direction is an example of the first direction
  • the Y1-Y2 direction is an example of the second direction.
  • the vibration applying portion 2 includes a fixed yoke 110, a movable yoke 120, a first exciting coil 130A, a second exciting coil 130B, a first rubber 140A, a second rubber 140B, and the like. It has a permanent magnet 160.
  • the fixed yoke 110 has a plate-shaped base 111 having a substantially rectangular planar shape. The axial direction of the first exciting coil 130A and the second exciting coil 130B is parallel to the Z1-Z2 direction.
  • the movable yoke 120 is an example of the first yoke
  • the fixed yoke 110 is an example of the second yoke
  • the first rubber 140A and the second rubber 140B are examples of the elastic support portion.
  • the fixed yoke 110 further has a central protruding portion 112 protruding upward (Z1 side) from the center of the base 111, and a first side protruding upward from the Y1 side end (front end) in the longitudinal direction of the base 111. It has a side protrusion 114A and a second side protrusion 114B that protrudes upward from the end (rear end) on the Y2 side in the longitudinal direction of the base 111.
  • the first lateral protrusion 114A and the second lateral protrusion 114B are provided at positions sandwiching the central protrusion 112 in the X1-X2 direction.
  • the fixed yoke 110 further includes a first iron core 113A projecting upward from between the central protrusion 112 of the base 111 and the first lateral protrusion 114A, and the central protrusion 112 and the second side of the base 111. It has a second iron core 113B that protrudes upward from between the direction protrusion 114B.
  • the first exciting coil 130A is wound around the first iron core 113A
  • the second exciting coil 130B is wound around the second iron core 113B.
  • a first rubber 140A is provided on the first lateral protrusion 114A
  • a second rubber 140B is provided on the second lateral protrusion 114B.
  • the central protrusion 112 is an example of the first protrusion
  • the first lateral protrusion 114A and the second lateral protrusion 114B are examples of the second protrusion.
  • the movable yoke 120 has a plate shape and a substantially rectangular planar shape.
  • the movable yoke 120 is in contact with the first rubber 140A and the second rubber 140B at its longitudinal end.
  • a permanent magnet 160 is attached to the surface of the movable yoke 120 on the fixed yoke 110 side.
  • the permanent magnet 160 has a first region 161, a second region 162 located on the Y1 side of the first region 161 and a third region 163 located on the Y2 side of the first region 161.
  • the first region 161 is magnetized so as to have an S pole
  • the second region 162 and the third region 163 are magnetized so as to have an N pole.
  • the first region 161 faces the central protrusion 112, and the boundary 612 between the first region 161 and the second region 162 faces the first exciting coil 130A.
  • the boundary 613 between the region 161 and the third region 163 is attached to the center of the movable yoke 120 in a plan view so as to face the second exciting coil 130B. Further, the boundary 612 is located on the Y2 side of the axis of the first exciting coil 130A, and the boundary 613 is located on the Y1 side of the axis of the second exciting coil 130B.
  • the boundary 612 is located on the Y2 side of the center of the first iron core 113A
  • the boundary 613 is located on the Y1 side of the center of the second iron core 113B.
  • the permanent magnet 160 magnetizes the fixed yoke 110 and the movable yoke 120, and the movable yoke 120 is urged in the Z1-Z2 direction toward the fixed yoke 110 by a magnetic attraction force. Further, both ends of the movable yoke 120 are urged by the magnetic attraction force in the directions of approaching each of the first lateral protrusion 114A and the second lateral protrusion 114B in the Y1-Y2 direction.
  • the vibration applying unit 2 When generating vibration in the housing 260, the vibration applying unit 2 is driven so that the directions of the currents flowing through each of the first exciting coil 130A and the second exciting coil 130B are alternately reversed. That is, the directions of the currents flowing through each of the first exciting coil 130A and the second exciting coil 130B are alternately reversed, so that the magnetic poles on the surface of the first iron core 113A on the movable yoke 120 side and the second iron core 113B The magnetic poles on the surface of the movable yoke 120 side are inverted independently of each other.
  • the permanent magnet 160 and the movable yoke 120 reciprocate in the Y1-Y2 direction or the Z1-Z2 direction according to the direction of the current flowing through the first exciting coil 130A and the direction of the current flowing through the second exciting coil 130B. Exercise.
  • the relationship between the direction of the electric current and the direction of motion will be described later.
  • the first rubber 140A and the second rubber 140B have a rectangular planar shape with the X1-X2 direction as the longitudinal direction.
  • the first rubber 140A is sandwiched between the first lateral protrusion 114A and the movable yoke 120
  • the second rubber 140B is sandwiched between the second lateral protrusion 114B and the movable yoke 120.
  • the first rubber 140A and the second rubber 140B are sandwiched between the fixed yoke 110 and the movable yoke 120. Therefore, unless it is intentionally disassembled, the first rubber 140A and the second rubber 140B are held between the fixed yoke 110 and the movable yoke 120.
  • the first rubber 140A may be fixed to the upper surface of the first lateral protrusion 114A, the lower surface of the movable yoke 120, or both, and the second rubber 140B may be fixed to the second lateral protrusion 114B. It may be fixed to the upper surface of the movable yoke 120, the lower surface of the movable yoke 120, or both of them.
  • FIG. 13A is a diagram showing the relationship between the direction of the electric current and the direction of motion in the first combination.
  • the magnetic pole on the surface of the first iron core 113A on the movable yoke 120 side is the north pole
  • the magnetic pole on the surface of the second iron core 113B on the movable yoke 120 side is also the north pole.
  • the magnetic poles on the surfaces of the central protrusion 112, the first lateral protrusion 114A, and the second lateral protrusion 114B on the movable yoke 120 side are S poles.
  • a repulsive force acts between the central protrusion 112 and the first region 161
  • a repulsive force acts between the first iron core 113A and the second region 162
  • a repulsive force acts between the region and the region 163. Therefore, a force 190U facing Z1 acts on the movable yoke 120.
  • FIG. 13B is a diagram showing the relationship between the direction of the electric current and the direction of motion in the second combination.
  • the magnetic pole on the surface of the first iron core 113A on the movable yoke 120 side is the S pole
  • the magnetic pole on the surface of the second iron core 113B on the movable yoke 120 side is also the S pole.
  • the magnetic poles on the surfaces of the central protrusion 112, the first lateral protrusion 114A, and the second lateral protrusion 114B on the movable yoke 120 side are N poles.
  • an attractive force acts between the central protrusion 112 and the first region 161
  • an attractive force acts between the first iron core 113A and the second region 162
  • An attractive force acts between the region and the region 163. Therefore, a force 190D facing Z2 acts on the movable yoke 120.
  • the movable yoke 120 reciprocates in the Z1-Z2 direction. Exercise. That is, by energizing the first exciting coil 130A and the second exciting coil 130B, the movable yoke 120 vibrates in the Z1-Z2 direction with the position in the initial state as the neutral position.
  • FIG. 13C is a diagram showing the relationship between the direction of the electric current and the direction of motion in the third combination.
  • the magnetic pole on the surface of the first iron core 113A on the movable yoke 120 side is the north pole
  • the magnetic pole on the surface of the second iron core 113B on the movable yoke 120 side is the south pole.
  • the magnetic pole on the surface of the first lateral protrusion 114A on the movable yoke 120 side is the S pole
  • the magnetic pole on the surface of the second lateral protrusion 114B on the movable yoke 120 side is the north pole.
  • FIG. 13D is a diagram showing the relationship between the direction of the electric current and the direction of motion in the fourth combination.
  • the magnetic pole on the surface of the first iron core 113A on the movable yoke 120 side is the south pole
  • the magnetic pole on the surface of the second iron core 113B on the movable yoke 120 side is the north pole.
  • the magnetic pole on the surface of the first lateral protrusion 114A on the movable yoke 120 side is the north pole
  • the magnetic pole on the surface of the second lateral protrusion 114B on the movable yoke 120 side is the south pole.
  • a repulsive force acts between the first lateral protrusion 114A and the second region 162
  • a repulsive force acts between the first iron core 113A and the first region 161
  • the second iron core acts.
  • An attractive force acts between 113B and the first region 161
  • an attractive force acts between the second lateral protrusion 114B and the third region 163. Therefore, a force 190R facing Y2 acts on the movable yoke 120.
  • the movable yoke 120 reciprocates in the Y1-Y2 directions. Exercise. That is, by energizing the first exciting coil 130A and the second exciting coil 130B, the movable yoke 120 vibrates in the Y1-Y2 direction with the position in the initial state as the neutral position.
  • Such a vibration imparting portion 2 can be used, for example, by attaching the Z1 side surface of the movable yoke 120 to the bottom plate 211 of the housing 260.
  • FIG. 14 is a cross-sectional view showing the configuration of the vibration generator according to the second embodiment.
  • the vibration generator 300 is supported by the housing 310 and the housing 310 and vibrates in the first direction (Z1-Z2 direction) to generate sound. It has a diaphragm 312 (vibrating plate 312) and a vibration applying portion 220 attached to the housing 310 to vibrate the housing 310.
  • the vibration applying unit 220 vibrates the housing 310 in the first direction at the first frequency f1, and causes the housing 310 to vibrate in the second direction (X1-X2 direction or Y1-Y2 direction) orthogonal to the first direction. It is vibrated at a second frequency f2, which is lower than the first frequency f1.
  • the vibration generator 300 further has a connecting portion 311 that connects the housing 310 and the diaphragm 312.
  • the connecting portion 311 is thinner than the portion connected to the connecting portion 311 of the housing 310.
  • Other configurations are the same as in the first embodiment.
  • the vibration in the first direction of the housing 310 causes the diaphragm 312 to vibrate in the first direction through the bending of the connecting portion 311 and the diaphragm 312 to vibrate the surrounding air. There is a sound. Further, in the vibration in the second direction, the diaphragm 312 hardly vibrates in the first direction, so that the diaphragm 312 does not generate sound.
  • the vibration at the first frequency f1 in the first direction can present the sound to the human without substantially feeling the vibration, and the sound can be presented to the human in the second direction.
  • the vibration at the second frequency f2 makes it possible to present the vibration to a human with substantially no sound.
  • the diaphragm 312 can be integrally formed with the connecting portion 311 and the housing 310.
  • the housing 310, the connecting portion 311 and the diaphragm 312 are made of synthetic resin.
  • the diaphragm 312 may have the same thickness as the connecting portion 311 and may be thinner or thicker than the connecting portion 311.
  • the use of the vibration generator of the present disclosure is not particularly limited, but it can be used, for example, for presenting vibration and sound to people in a car.
  • the presentation to call the attention of only the driver with low urgency is given by the vibration of the driver's seat
  • the presentation to call the attention of all the occupants in the car with high urgency is given by the generation of the sound spreading in the car. be able to.
  • the place where the vibration generator of the present disclosure is installed is not particularly limited, but it can be built in, for example, on the seat surface or the backrest of the driver's seat.
  • vibration and sound may be presented to one user from a plurality of vibration generators.
  • vibration and sound may be presented to one user from a plurality of vibration generators.
  • a plurality of vibration generators and presenting vibrations or sounds from a plurality of directions it is possible to realize a realistic presentation.
  • the sound and the vibration can be sufficiently separated and presented to the user, but depending on the application, the sound and the vibration are intentionally mixed and presented to the user. It may be presented.
  • the signal of the first frequency f1 high frequency signal
  • the signal of the second frequency f2 low frequency signal
  • a signal (superimposed signal) in which the signal of the frequency f1 of 1 and the signal of the second frequency f2 are superimposed may be input separately.
  • FIG. 15A is a diagram showing an example of the waveform of the signal of the first frequency f1.
  • FIG. 15B is a diagram showing an example of the waveform of the signal of the second frequency f2.
  • FIG. 15C is a diagram showing an example of the waveform of the superimposed signal in which the signal of the first frequency f1 and the signal of the second frequency f2 are superimposed.
  • the first frequency f1 is 20 ⁇ f0
  • the second frequency f2 is f0.
  • the housing can be moved in the first direction. At the first frequency f1, it can be vibrated in the second direction at the second frequency f2.
  • Housing (inner housing) 11 Main body 11a Accommodating part 12 Lid part 20 Vibrating body 30 Holding part 40 Elastic support part 41 Bending part 42 Flat part 42a Opening part 43 Mounting part 43a Engagement claw part 50 Magnetic drive part 60 Electromagnet (first magnetic field generating part) 61 Magnetic core 62 Bobbin 63 Coil 64 Terminal 70 Permanent magnet (second magnetic field generator) 71 Magnetized surface 72 Slit 73 Magnetized region 73a First magnetized region 73b Second magnetized region 74 York 110 Fixed yoke (second yoke) 111 Base 112 Central protrusion (first protrusion) 113A 1st iron core 113B 2nd iron core 114A 1st lateral protrusion (2nd protrusion) 114B Second lateral protrusion (second protrusion) 120 Movable yoke (first yoke) 130A 1st exciting coil 130B 2nd exciting coil 140A 1st rubber 140B 2nd rubber 160 Permanent magnet 161 1s

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

Un dispositif de génération de vibrations comprend un boîtier, une plaque de vibration qui est supportée dans le boîtier et qui génère un son par vibration dans une première direction, et une unité de transmission de vibrations qui est montée dans le boîtier et qui fait vibrer le boîtier. L'unité de transmission de vibrations fait vibrer le boîtier dans la première direction à une première fréquence et fait vibrer le boîtier dans une seconde direction à une seconde fréquence qui est inférieure à la première fréquence.
PCT/JP2020/007014 2019-03-14 2020-02-21 Dispositif de génération de vibrations WO2020184147A1 (fr)

Priority Applications (4)

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JP2021504889A JP7253613B2 (ja) 2019-03-14 2020-02-21 振動生成装置
CN202080012365.XA CN113382808B (zh) 2019-03-14 2020-02-21 振动生成装置
EP20770919.7A EP3939709A4 (fr) 2019-03-14 2020-02-21 Dispositif de génération de vibrations
US17/446,351 US20210387231A1 (en) 2019-03-14 2021-08-30 Vibration generating device

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JP2019047616 2019-03-14
JP2019-047616 2019-03-14

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US17/446,351 Continuation US20210387231A1 (en) 2019-03-14 2021-08-30 Vibration generating device

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EP (1) EP3939709A4 (fr)
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WO (1) WO2020184147A1 (fr)

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JP2001121079A (ja) 1999-10-22 2001-05-08 Yamaha Corp 振動源駆動装置
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JP2013056309A (ja) * 2011-09-09 2013-03-28 Alps Electric Co Ltd 振動発生装置
JP2016082536A (ja) * 2014-10-22 2016-05-16 日本電信電話株式会社 加速度発生装置および情報呈示方法
JP2016096677A (ja) * 2014-11-14 2016-05-26 アルプス電気株式会社 振動発生装置
JP2019047616A (ja) 2017-09-01 2019-03-22 小堀　しづ 現代、宇宙はどのように成っているか。

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JP2002159916A (ja) * 2000-11-24 2002-06-04 Citizen Electronics Co Ltd 多機能型音響装置
DE10238325A1 (de) * 2002-08-16 2004-03-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Lautsprecher
KR101648955B1 (ko) * 2015-03-24 2016-08-19 주식회사 예일전자 감각신호출력장치 및 그 진동과 관련된 탄발지지체
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JP2019025390A (ja) * 2017-07-26 2019-02-21 アルプス電気株式会社 振動発生装置

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JP2001121079A (ja) 1999-10-22 2001-05-08 Yamaha Corp 振動源駆動装置
JP2004297923A (ja) * 2003-03-27 2004-10-21 Nippon Signal Co Ltd:The プレーナー型電磁アクチュエータ
JP2013056309A (ja) * 2011-09-09 2013-03-28 Alps Electric Co Ltd 振動発生装置
JP2016082536A (ja) * 2014-10-22 2016-05-16 日本電信電話株式会社 加速度発生装置および情報呈示方法
JP2016096677A (ja) * 2014-11-14 2016-05-26 アルプス電気株式会社 振動発生装置
JP2019047616A (ja) 2017-09-01 2019-03-22 小堀　しづ 現代、宇宙はどのように成っているか。

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CN113382808A (zh) 2021-09-10
CN113382808B (zh) 2022-08-16
EP3939709A1 (fr) 2022-01-19
JP7253613B2 (ja) 2023-04-06
JPWO2020184147A1 (fr) 2020-09-17
US20210387231A1 (en) 2021-12-16
EP3939709A4 (fr) 2022-11-23

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